DISA is a company founded in Denmark (with the name Compagnie Madsen A/S) which since 1900 has produced metal casting products.

In 1936 it changed name from Dansk Rekyl Riffel Syndikat A/S to Dansk Industri Syndikat A/S and was a defence manufacturer most notable for producing the Madsen machine gun and Madsen M-50.

In 1879 V.H.O Madsen designed an air-cooled, repeating machine gun which then took his name, Madsen. In the year 1900 the company Compagnie Madsen A/S was founded. This company was to produce this Madsen machine gun.

In 1930 A.P Møller bought a sum of shares corresponding to 15% of the total shares. In the following years A.P Møller expanded his shareholding to 31.6%, and was hereby the biggest shareholder.

• Madsen M1888 Self Loading rifle^[1][2]
• Madsen M1896 Flaadens Rekylgevær^[1][2]
• Madsen machine gun^[3]
• Schouboe Automatic Pistol
• Lightened Experimental submachine gun^{[citation needed]}
• Madsen-Saetter machine gun
• Madsen M45^[3]
• Madsen-Ljungmann Self Loading rifle M. 1945^[3]
• Madsen M47
• 51 mm Madsen Grenade launcher M 1947^[3]
• Madsen M50^[3]
• Madsen LAR
• Madsen 20 mm AA gun^[3]